| /* |
| * Copyright 2019-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.k8snetworking.impl; |
| |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.IpPrefix; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.LeadershipService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.k8snetworking.api.K8sFlowRuleService; |
| import org.onosproject.k8snetworking.api.K8sNetwork; |
| import org.onosproject.k8snetworking.api.K8sNetworkEvent; |
| import org.onosproject.k8snetworking.api.K8sNetworkListener; |
| import org.onosproject.k8snetworking.api.K8sNetworkService; |
| import org.onosproject.k8snode.api.K8sNode; |
| import org.onosproject.k8snode.api.K8sNodeEvent; |
| import org.onosproject.k8snode.api.K8sNodeListener; |
| import org.onosproject.k8snode.api.K8sNodeService; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.DriverService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.packet.PacketService; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.slf4j.Logger; |
| |
| import java.util.Objects; |
| import java.util.concurrent.ExecutorService; |
| |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.k8snetworking.api.Constants.K8S_NETWORKING_APP_ID; |
| import static org.onosproject.k8snetworking.api.Constants.PRIORITY_GATEWAY_RULE; |
| import static org.onosproject.k8snetworking.api.Constants.ROUTING_TABLE; |
| import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.tunnelPortNumByNetId; |
| import static org.onosproject.k8snetworking.util.RulePopulatorUtil.buildExtension; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Populates switching flow rules on OVS for providing the connectivity between |
| * container and network gateway. |
| */ |
| @Component(immediate = true) |
| public class K8sSwitchingGatewayHandler { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final int GW_IP_PREFIX = 32; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected LeadershipService leadershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected DriverService driverService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sFlowRuleService k8sFlowRuleService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNetworkService k8sNetworkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected K8sNodeService k8sNodeService; |
| |
| private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| private final InternalK8sNetworkListener k8sNetworkListener = |
| new InternalK8sNetworkListener(); |
| private final InternalK8sNodeListener k8sNodeListener = |
| new InternalK8sNodeListener(); |
| |
| private ApplicationId appId; |
| private NodeId localNodeId; |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(K8S_NETWORKING_APP_ID); |
| k8sNetworkService.addListener(k8sNetworkListener); |
| k8sNodeService.addListener(k8sNodeListener); |
| localNodeId = clusterService.getLocalNode().id(); |
| leadershipService.runForLeadership(appId.name()); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| k8sNodeService.removeListener(k8sNodeListener); |
| k8sNetworkService.removeListener(k8sNetworkListener); |
| leadershipService.withdraw(appId.name()); |
| eventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| private void setGatewayRule(K8sNetwork k8sNetwork, boolean install) { |
| TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder() |
| .matchEthType(Ethernet.TYPE_IPV4) |
| .matchIPDst(IpPrefix.valueOf(k8sNetwork.gatewayIp(), GW_IP_PREFIX)); |
| |
| for (K8sNode node : k8sNodeService.completeNodes()) { |
| TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| |
| if (node.hostname().equals(k8sNetwork.name())) { |
| tBuilder.setEthDst(node.intgBridgeMac()) |
| .setOutput(PortNumber.LOCAL); |
| } else { |
| PortNumber portNum = tunnelPortNumByNetId(k8sNetwork.networkId(), |
| k8sNetworkService, node); |
| K8sNode localNode = k8sNodeService.node(k8sNetwork.name()); |
| |
| tBuilder.extension(buildExtension( |
| deviceService, |
| node.intgBridge(), |
| localNode.dataIp().getIp4Address()), |
| node.intgBridge()) |
| .setOutput(portNum); |
| } |
| |
| k8sFlowRuleService.setRule( |
| appId, |
| node.intgBridge(), |
| sBuilder.build(), |
| tBuilder.build(), |
| PRIORITY_GATEWAY_RULE, |
| ROUTING_TABLE, |
| install); |
| } |
| } |
| |
| private class InternalK8sNetworkListener implements K8sNetworkListener { |
| |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sNetworkEvent event) { |
| switch (event.type()) { |
| case K8S_NETWORK_CREATED: |
| case K8S_NETWORK_UPDATED: |
| eventExecutor.execute(() -> processNetworkCreation(event)); |
| break; |
| case K8S_NETWORK_REMOVED: |
| eventExecutor.execute(() -> processNetworkRemoval(event)); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| private void processNetworkCreation(K8sNetworkEvent event) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setGatewayRule(event.subject(), true); |
| } |
| |
| private void processNetworkRemoval(K8sNetworkEvent event) { |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| setGatewayRule(event.subject(), false); |
| } |
| } |
| |
| private class InternalK8sNodeListener implements K8sNodeListener { |
| private boolean isRelevantHelper() { |
| return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
| } |
| |
| @Override |
| public void event(K8sNodeEvent event) { |
| switch (event.type()) { |
| case K8S_NODE_COMPLETE: |
| eventExecutor.execute(() -> processNodeCompletion(event.subject())); |
| break; |
| case K8S_NODE_INCOMPLETE: |
| default: |
| break; |
| } |
| } |
| |
| private void processNodeCompletion(K8sNode node) { |
| log.info("COMPLETE node {} is detected", node.hostname()); |
| |
| if (!isRelevantHelper()) { |
| return; |
| } |
| |
| k8sNetworkService.networks().forEach(n -> setGatewayRule(n, true)); |
| } |
| } |
| } |